Australian pop band 5 Seconds of Summer have certainly introduced themselves to the music world as their self-titled debut album lands in the No.1 spot on the Billboard 200 chart by earning the third-highest sales figure of the year for a debut.

5 Seconds of Summer's debut album lands at No.1

The foursome, Michael Clifford, Luke Hemmings, Calum Hood and Ashton Irwin, landed the chart topping record with sales of 259,000 copies, according to Nielsen SoundScan, which also makes it the fourth-highest sales week of the year, overall.

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The studio album, which consists of 12 tracks, is also the highest-selling debut for a group in nearly eight years, the previous highest was Daughtry's 2006 self-titled album that sold 304,000 copies.

However, this isn't 5SOS's first time experiencing chart success, earlier this year they released a four-song EP, titled 'She Looks So Perfect,' which debuted at No.2 with sales of 143,000 and featured the hit track, 'You look so perfect standing there/in my American Apparel underwear.'

More: Are '5 Seconds Of Summer' The New One Direction?

The Aussi boys' success also could be contributed to their management team, they are represented by the same company behind arguably the world's most popular boy band, One Direction. 5SOS have also been the opening act for 1D's stadium tour throughout North America.

5 Seconds of Summer are the opening act for One Direction's stadium tour

Upon hearing the exciting news of their achievement, Ashton took to twitter and posted, "To everyone that's been apart of the journey so far we love you so much, you guys made the album number #1 in the US, we are speechless."

Following in second spot is the chart dominating Disney's 'Frozen' soundtrack, selling 37,000 copies in its 31st consecutive week in the top 5. 'Weird Al' Yankovic's 'Mandatory Fun' drops from No.1 to the 3rd spot with 33,000 copies. British singer Sam Smith falls at No.4 selling 31,000 copies, and rounding off this week's top 5 is Kidz Bop Kids' 'Kidz Bop 26' with 27,000.